Tech riderRev. 7 Oct 2026

Readability

Ch 047.4of 25 AI Readability Checkers

1Runs onLinux, Mac, Windows
2CostsFree plan
3Grade-level analysisYes
4Sentence complexityYes
5Plain-language rewritesNo
6Accessibility guidanceNo
7Input formatsdocument

7 lines stated Written from the maker's own pages: readability.adaptive-enforcement-lab.com, github.com

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Overview

Readability is ranked #4 of 25 in AI readability checkers on Specifiction. It runs on Linux, macOS, Windows. There is a free plan.

Readability plans and pricing

All plans

Readability Free MIT-licensed GitHub Action, CLI, and Docker image; no paid plans listed github.com · 7 Oct 2026

Compared on AI readability checkers

Grade-level analysis: Yesreadability.adaptive-enforcement-lab.com
Sentence complexity: Yesreadability.adaptive-enforcement-lab.com
Plain-language rewrites: Noreadability.adaptive-enforcement-lab.com
Accessibility guidance: Noreadability.adaptive-enforcement-lab.com
Input formats: documentreadability.adaptive-enforcement-lab.com

Facts

Purpose: Readability analyzes Markdown files and reports readability scores.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Metrics: It reports grade level, reading ease, and estimated reading time at 200 words per minute.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Reading formulas: The project lists Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, and ARI grade-level scores.github.com · 7 Oct 2026
Additional checks: It can measure word and sentence metrics and detect or require MkDocs-style admonitions.github.com · 7 Oct 2026
Output formats: Listed output formats include table, Markdown, JSON, summary, and report.github.com · 7 Oct 2026
Threshold checks: Threshold enforcement can fail a CI check when content quality drops.github.com · 7 Oct 2026
Ways to run: The project documents a command-line tool, a GitHub Action, a Docker image, and pre-commit hooks.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Supported binaries: Pre-built binaries are listed for Linux (amd64, arm64), macOS (amd64, arm64), and Windows (amd64).readability.adaptive-enforcement-lab.com · 7 Oct 2026
GitHub integration: The GitHub Action can run checks in workflows and add a formatted report to the Actions job summary.github.com · 7 Oct 2026
Container verification: The repository documents verifying the Docker image signature with cosign.github.com · 7 Oct 2026
License: The repository identifies its license as MIT.github.com · 7 Oct 2026
Intended users: The product site names bloggers, technical writers, documentation teams, students, and curious readers as audiences for its introductory material.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Notable limit: The documented pre-built Windows binary is for amd64; the page lists amd64 and arm64 for Linux and macOS.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Thresholds: Users can configure thresholds and make CI checks fail when documentation exceeds them.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Integrations: The project provides a GitHub Action and pre-commit hooks, and documents CI/CD examples for GitLab CI, CircleCI, and Jenkins.readability.adaptive-enforcement-lab.com · 7 Oct 2026
Configuration: A .readability.yml file can set thresholds and path-specific overrides, and the project provides a JSON Schema for editor validation and autocomplete.readability.adaptive-enforcement-lab · 7 Oct 2026
Docker security: The Docker guide says images are signed with Cosign, include a signed SBOM, and use a distroless base image that runs as a non-root user.readability.adaptive-enforcement-lab · 7 Oct 2026
Platforms: Pre-built binaries are listed for Linux amd64 and arm64, macOS amd64 and arm64, and Windows amd64.readability.adaptive-enforcement-lab · 7 Oct 2026
Deployment: It can be installed as a Go command-line tool, run through Docker, added as a GitHub Action, or built from source.readability.adaptive-enforcement-lab · 7 Oct 2026
Who it is for: The documentation describes use cases for bloggers, technical documentation writers, documentation teams, students, and people curious about readability.readability.adaptive-enforcement-lab · 7 Oct 2026
Limitations: The maker says readability scores assess sentence and word complexity and cannot determine accuracy, completeness, context, or tone.readability.adaptive-enforcement-lab · 7 Oct 2026